NEC Environment Engineering Ltd.
Tokyo, JP· latest recorded location
NEC Environment Engineering Ltd. is named on 8 US grants and 0 published applications in this corpus. Its most frequent classification is C02F (Treatment of water, waste water, sewage, or sludge).
- Granted patents
- 8
- Published applications
- 0
- Inventors
- 16
- Granted in 2026 so far
- 0
- Most recent grant
- 10 Dec 1996
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
By publication year.
Technology areas
Share of 8 documents
- C02FTreatment of water, waste water, sewage, or sludge4
- B01DSeparation2
- B01JChemical or physical processes2
- F16FSprings2
- Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests2
- B32BLayered products, i.e. products built-up of strata of flat or non-flat1
- C04BLime, magnesia1
- C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds1
- C08JWorking-up1
- C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients1
Recent patents
- Method for treating polluted water10 Dec 1996US 5,582,741 A
- Apparatus for treating water containing organic chlorine compounds13 Aug 1996US 5,545,316 A
- Method of treating water containing organic chlorine compounds26 Dec 1995US 5,478,481 A
- Method and system for recovering wastewater10 Aug 1993US 5,234,606 A
- Thermal adhesive vibration damping sheets13 Jul 1993US 5,227,234 A
No published applications.
Most cited
By later US patents
- Method and system for recovering wastewater26US 5,234,606 A1993
- Method for treating polluted water17US 5,582,741 A1996
- Method of treating water containing organic chlorine compounds12US 5,478,481 A1995
- Composition for vibration damper, process for manufacture thereof, and vibration damper9US 5,004,764 A1991
- Composition having damping property, damping member, process for preparation of damping member and method of using damping member6US 4,966,929 A1990